摘要
采用熔融共混的方法制备了聚碳酸1,2-丙二酯(PPC)/聚琥珀酸丁二酯(PBS)共混物和PPC/PBS/DAOP(邻苯二甲酸二烯丙酯)增塑共混物,对共混物的相容性、热性能、结晶性和物理机械性能进行了初步研究.研究结果表明PPC/PBS共混物为不相容体系,PPC对PBS的结晶度影响很小;PBS的加入提高了共混物的起始热分解温度(Td-5%),当共混物中PBS含量从10%增加到90%时,共混物的Td-5%可分别增加15℃到59℃.DAOP对PPC/PBS共混物有增塑作用,当PPC/PBS/DAOP的比例从30/70/0变化到30/70/30时,共混物玻璃化转变温度(Tg)下降了36.9℃.与PPC/PBS共混物相比,组成优化的DAOP增塑共混物PPC/PBS/DAOP(PPC/PBS/DAOP=30/70/5)的断裂伸长率和断裂能最大可提高31倍和34倍,分别达到655.1%和3.4 J/mm2,因此引入DAOP尽管使共混材料的热稳定性有所下降,但拓宽了PPC/PBS共混材料的使用温度窗口.
Biodegradable polyblends of poly(propylene carbonate)(PPC)/poly(butylene succinate)(PBS) and PPC/PBS/DAOP(diallyl phthalate) were prepared by melt blending.The miscibility,crystallization,thermal stability and mechanical properties of the polyblends were investigated by fourier transform infrared spectroscopy(FTIR),differential scanning calorimetry(DSC),thermogravimetric analysis(TGA),polarized optical microscope(POM) and tensile tests.The data from FTIR and DSC indicated that PPC and PBS were immiscible,PP...
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2009年第3期227-232,共6页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号20225414)资助项目
